2Pcs Quick Connector Adapters R1234YF to R134A High and Low Quick Couplers Connectors Features: [Wide Application] This low and high-side quick coupler is suitable for R1234YF/R12 to R134A car air conditioner AC charging, refrigerant handling, AC manifold pressure gauge connection, diagnostic checks, recovery, and evacuation work. [R1234YF High Side] R1234YF high side quick connector in red: High pressure side R1234YF connector with 17mm female x 1/4" SAE male thread. R12 to R134a adapter connector: 1/4" SAE female x 16mm high pressure R134A quick connector. This R1234YF quick coupler is designed for R1234YF/R12 to R134A automotive air conditioning charging systems. High-quality R1234YF to R134A hose adapter with durable construction for reliable performance and long-term use. Ball lock design and rubber sealing ring ensure a secure seal during R1234YF to R134A conversion. [Easy to Remove and Install] The R134A to R1234YF quick coupler features an auto-shut-off function, allowing for easy connection and disconnection. The ball lock mechanism combined with a rubber seal provides excellent sealing performance. [High-Quality Material] The quick coupler is constructed from brass material, offering strength, durability, high resistance to rust, and long-lasting use. [R1234YF Low Side] Blue is the R1234YF low side quick connector; low side R1234YF connector has 14mm female x 1/4" SAE male thread. R12 to R134a adapter connector: 1/4" SAE female x 13mm low pressure R134A quick connector. Specification: Product Name: Quick Couplers Material: Brass Size: 7.3 x 1.6 cm / 2.8 x 0.6 inch Color: Red + Blue Package Included: 2 x Connector Note: Due to differences between monitor displays, the image may not reflect the actual color of the item. Please allow slight dimensional variations due to manual measurement.